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Online since: April 2018
Authors: János Lukács, Ádám Dobosy, Marcell Gáspár
During welding the elements are affected with heat-effect and mechanical loads, which result in inhomogeneous welded joint.
In case of matching condition, the evolved mechanical properties of the joint are equal or nearly the same as the base material.
In undermatching case the mechanical properties of the joint are lower than the base material properties, while in case of overmatching condition the joint properties are higher than the base material features.
It is necessary to note, that the mechanical properties of the welded joint exceed the minimal requirements of the base material in the case of undermatching filler metal [7].
The mechanical properties of the examined base materials and filler metals.
Online since: July 2011
Authors: Zhi Hui Wu, Xian Qing Xiong
Rice-straw board is usually produced by isocyanate adhesive, it is formaldehyde-release while using, uniform density, smooth surface, no obvious color difference, mechanical property is in keeping with GB/T 4897.1~4987.7-2003 , can be processed as secondary veneer or milling, punching, notch, bend, carve, paint and so on [1], and be widely used in cabinet work, building decoration and packaging industry [2].
It can be seen from the experimental results, gloss of lacquerfilm has close relation with the gloss of 50% flat lacquer that we used. gloss of the crackle-simulated coating model belongs to flat gloss, which is in accordance with the QJ/HR-2006 and GB/T 4893.1-4893.8-2005(gloss14-35%), Matt Ⅱ (15-24%). crackle-simulated pattern on the surface and paint film property itself will weaken the gloss of top-coat.
Seen from the coating test procedure, surface effect of crackle-simulated coating is conditioned by sanding technology, interior temperature and humidity as well as coating operation and so on, especially interior temperature and humidity affected greatly on paint film property.
Factors that affect the cost of painting including three parts: efficiency of construction, production engineering, coating thickness.
Factors affect the environmental protection which are usually mentioned in paint of furniture are menstruum and firming agent, according to the national standards., when content of harmful material is greater than 0.3mg/m³, means it is destroying environment.
Online since: September 2013
Authors: Ying Yu, Chun Cheng Zuo, Yu Xin Zuo, Yang Yang
The Effect of Chain Length on Polyelectrolyte Brushes Formed from Adsorption of Diblock Copolymers Yang Yang1, a, ChunCheng Zuo1, b, YuXin Zuo1, c and Ying Yu1, d 1 College of Mechanical Science and Engineering, Jilin University, Changchun, 130025, China ajlu521@gmail.com , bzuocc@jlu.edu.cn , czuoyuxin11@mails.jlu.edu.cn, dyuying11@mails.jlu.edu.cn Keywords: polyelectrolyte brush; adsorption; diblock copolymer; Abstract.
The result shows that the surface adsorption density is affected strongly by ratio of A-block length to the chain length, inhibited by the counterions, which is qualitatively consistent with experiments.
Introduction The surface adsorption density depends on many factors, including solvent, characteristic of copolymer chain, counterions etc.
We study the properties of surface density and particles distribution.
Online since: June 2020
Authors: Guang Hong Zhu, Yan Bin Liu
Eq. (5) can also be written in terms of the natural frequency and the damping factor
Therefore, the frequency of these period functions depends upon the mechanical vibration.
Unless otherwise specified, the material properties and dimensions of the FSCBVT harvester in the simulations are listed in Table 1.
Material properties and dimensions of the energy harvester Basis layer E rb b L M (N/m2) (kg/m2) (m) (m) (kg) 200*109 7.8 *103 0.01 0.1 0.1 Piezoelectric layers C11 rp e31 e33 (N/m2) (kg/m2) (C/m2) (nF/m) 2* 109 2.4* 103 -5.8 4.956 Fig. 3(a) shows the effect of h0 on the natural frequency of the cantilever harvester, and the parameter in this simulation is set to be hp=0.2mm.
Because the parameter is affected by the geometric parameters of a FSCBVT harvester, we analyse the impact of geometric parameters on the inherent electromechanical coupling parameter.
Online since: June 2025
Authors: Joao Pedro Almeida Lopes, Hebert Luis Rossetto
Typically, WT contains a mixture of aromatic hydrocarbons, phenols, and terpenes, which contribute to its hydrophobic properties.
The effectiveness of these methods depends on various factors, including the environmental conditions, the quality of application, and the properties of the chosen materials.
The main goal is to determine whether WT can effectively reduce the water absorption in concrete, without affecting its mechanical properties, and incentivizing further studies to investigate the service life of such materials, aiming to provide a greener alternative for the construction industry.
This range aligns with the decomposition of aromatic hydrocarbons, which are known for their hydrophobic properties.
Online since: June 2007
Authors: Kyung Sub Lee, Kyung Tae Hong, Suk Woo Hong, Sang Min Song, Deuck Seung Bae, Soon Hyo Chung, Woo Sang Jung
The higher steam parameters (operating temperature and pressure) of the new plants require new materials with improved long-term high-temperature properties.
The new ferritic super heat-resistant Cr-Mo steels (always mass%) have been recognized as an alternative for widely used high-strength austenitic stainless steels because of their favorable physical properties (thermal expansion and heat conductance) and lower price[4,5].
Therefore, under service conditions (elevated temperature and pressure) pronounced microstructural changes occur, leading to the degradation of long-term properties.
During exposure to elevated temperatures and creep stress, pronounced microstructure evolution occurs (recovery, grain and subgrain coarsening, precipitate coarsening), which deteriorate the mechanical properties.
Factors affecting a coarsening rate of MX are interfacial energy, γ, diffusion coefficient, D , solubility of particle in the matrix, ∞C , and molar volume in the particle, mV , in the case of a constant temperature.
Online since: April 2019
Authors: Janis Lungevics, K. Gross, Liene Pluduma, Ieva Stafecka
A wide range of properties potentially useful in industrial applications, such as self-cleaning [1], anti-corrosion, anti-icing, reduction of friction [2], non-wetting [3] has encouraged researchers to work on durable and cost-effective solutions.
As a result, combining different processing methods, for example, etching and modification with special agents may provide material with hydrophobic properties.
The roughest of the samples with an average roughness of 155 nm, etched in 10 wt% FeCl3/HCl solution for 5 min, was considered as hydrophilic, but after chemical treatment with ODT it showed the best anti-wetting properties.
Li, Fabrication of superhydrophobic textured steel surface for anti-corrosion and tribological properties, Appl.
Fujishima, A mechanically bendable superhydrophobic steel surface with self-cleaning and corrosion-resistant properties, J.
Online since: January 2017
Authors: Jintamai Suwanprateeb, Boris Golman, Sukasem Watcharamaisakul, Weeranuch Sukaraseranee
Granules exhibited relatively poor flow properties due to their small sizes and cohesive surface properties.
Thus, by adjusting the spray drying conditions we can control the granule properties.
The slurry composition and the rate of droplet evaporation are major factors that affect to granule shape and morphology.
Carr, Evaluating flow properties of solids.
Mojtaba, Whey powder: process technology and physical properties: A review, Middle-East J.
Online since: April 2014
Authors: Mao Sheng Li, Qun Gui Du
Study of Friction Lubrication Characteristics Research for CVT Fluids in Field Test Maosheng Li1, a*, Qungui Du2,b 1School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou Guangdong 510640, China 2Guangzhou Mechanical Engineering Research Institute, Guangzhou Guangdong 510700, China alms32389823@sohu.com, b398152583@qq.com Keywords: CVTF, CVT, cone pulley, steel strip, lubrication, abrasion mechanism Abstract.
Introduction Belt-drive continuously variable transmission has got a rapid development in recent years for its low fuel consumption, good performance in economy, simple mechanical structure and driving comfort[1-3].
Results and Conclusions 3.1 CVTF Performance Analysis 3.1.1 Property and Lubricity of CVTF CVT is sensitive to oil viscosity, oil viscosity directly affects the CVT transmission efficiency and wear situation and the service life of CVT.
Many factors can influence the viscosity property of transmission oil during the operation: The decrease of viscosity can be caused by the shear failure of the polymer improver of viscosity index under high shear rate; The kinematic viscosity can increase because of the generating of gum or sludge for oil oxidation during the operation.
Jie-hua Zhang, Min-jie Chen, Wei Yu, etal.Remaining Life Assessment of Used Oil by FTIR Based on Antioxidation Properties[J].Lubrication Engineering,2013,38(9):pp.92-94 [9].
Online since: October 2007
Authors: Tong Xiang Fan, Wei Cao, Cong Fa Zhang, Di Zhang
Since creep properties are relevant to BLR, an approach to predicting BLR behaviors from creep curves is briefly introduced.
Since creep properties are more readily available than BLR, efforts are made to correlate BLR with creep properties.
The instrumented bolts were calibrated by loading them with a well-defined weight, and the scale factors in the data acquisition program were set in order to record the bolt load signals in Newtons.
Mechanical Model of BLR.Since creep properties are more readily available than BLR, efforts are made to correlate BLR with creep properties.
Several approaches relating bolt-load retention properties to creep behaviors have been proposed by Webster [10] and Arimond [11].
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